Well-cleaning device.



1 L. CAMERON. WELL CLEANINGDEVICE. APPLICATION FILED IAR. 2. i918.

1' ,276, 028. Patented Apg. 20, 14918.

4. 6 V a J l l J. L'. CHMERON hereinafter be definitely i Edgerley,

Ia speci cation, reference Aof my invention; and

UNITED STATES PATENT OFFICE.

JABBETT L. CAMERON, GF EDGERLEY, LUUISIANA., ASSIGNOR 0F ONELHALF TO EVANGE- LINE rRoN WORKS, LTD., 0F VINTON,

LOUISIANA, A CORPORATION OF LOUISIANA.

WELL-CLEANING DEVICE.

Specification of Letters Patent.

Patented Ang. 20, 191.8.

To, all whom it may concern:

Be it known that I, lmnm'rr l... CAMERON, a citizen of the vUnited States, residing at in the county of Cilcasieu and State. of' Louisiana, lmve invented certain new and useful Improvements in Well- Cleanin Devices, of `which the following is being had to the nccompanyi ng drawings.

This invention relates to certain improvements .in well cleaning,V devices and has relation more particularly to a device of this general character especially designed and adapted for 'use in connection with the strniners for deep wells and it an object of the invention to provide a novel and iniroved device of this general character which readily permit-s an. eli'ective cleansing of the outer surface. of the strainer and `which automatically closes in substantially an instantaneous manner when the valve is relieved of the pressure of the cleansing fluid.

yIt is also an object of the invention to provide anovel and improved device of this general type which has directly engaged therewith a washer pipe with, which a wash pipe is adapted to coact when 'it is desired to cleanse the strainer.

The invention. consists in the details of construction and in the combination and arrangement of the several parts of my im proved device whereby certain important advantages are attained .and the device rendered simpler, less expensive and otherwise more convenient and advantageous for use, as will be hereinafter more fully set forth.

The novel 'features of my invention will claimed'.

In or'der that my invention may be the bet ter understood, I will now proceed to describe the same with reference to the accompanying drawings, wherein:

Fi re'1 is a view partlyin elevation'and part y-in section illustrating a device constructed in accordance with nn embodiment Fig. 2 is a view in perspective of the an nnla'r member and cage carried thereby as embodied in my improved device as herein disclosed. l

A s disclosed' in the accompanying drawings 1 denotes an internally threaded conplin having engaged with the lower end portion thereof the pipe Q and which pipe has its lower end open. Also in threaded engagement with the'interior of the con pling 2 is an annular member or body 3 hav*- ing depending therefromthe valve ca e 4'. The interior of the annular member or ody 3 is also threaded and hasrengaged there with the lower end portion of a washer pipe 5. The washer pipe 5 is of a predetermined length and has its upper or free end portion provided with the bell' for a pur osito be hereinafter more particularly set In threaded engagement with Vthe upper portion of the interior of the coupling l is the pcrforate pipe 7 embodied in the strainer and disposed around said pipe 7 is a screen ingclement d preferably ot wire. The npper end portion of the pipe 7 is provided with a.' couplingA 9 for a 'purpose which. believed to be obvious.

The cage 4 comprises a plurality of arms 11 spaced from the member or body 3 and integrally connected and radiating from a common center, ani such-central portion is rovided with an opening 12 in which is threaded an opstanding stem guide 14. The upper end of the stem guide 14 terminates a predetermined distance below the member or body 3 so that the valve 15 may have dcsired downward movement relative to the lower end ot the washer pipe 5. As herein disclosed the valve 'l5 is conical in shape and is provided at the axial center of its base with a depending stein 1G which is loosely directed within the guide 114, Interposed bctwccn the arms 11 und the base of the valve 15 is an expansible member `1.7 herein disclosed as a coil spring surrounding the guide 14 and the stem 16 and which senves to constantly urge-the valve 15 toward the lower yor adjacent end portion of the washer pipe 5. 'The major diameter of the valve 15 is such as to permit the valve 15 to seal the lower end of the Washer pipe 5 Vwhen the same is at the limit of its movement under Jthe influence ot the expansible member 17 so that the ingress of sand or other foreign matter into the washer pipe 5'or within theV perforate piper is prevented.

i 18 denotes, a Wash pipe of a length to ex; tend aboveftihe surface of the ground when the strainer is in applied position within a well andthe lower end of said pipe 18 has in threaded engagement therewith a conpling 19'. Threaded within the .lower portion of the coupling 19 is the upper end 4ter when the strainer 'is set.

portion` of the nipple 2U. The nipple 20 is of such a length as to extend within the washer pipe 5 and terminate below the bell (i thereof. Sm'roun'din'g the nipple 20 und below the coupling l5) is a gasket or packing 21. which eoacts with the bell, (i to effect a water tight joint when the nipple 20 is vinserted within the washer pipe y My iinl'n'oved device is particularly adapt ed for use in connection willi oil or water wells dilled by 'thehydraulie prom-as. In the drilling of oi] wells particularly in the extreme Southern -portion of the `United States the bore within the oil 'bearing sand stratum lids with a very thick heavy mud and this must be washed-out with clear wa- After the strainer" has been set, the nipple 2() coupled to the wash pipe 18 is inserted within the washer pipe 5' and clear water is pumped or otherwise delivered under pressure within 'the Washer pipe 5. The pressure of this 'water causes the valve. l5 to assume an open position so that. the water may be discharged into the bottom of the well. or bore from the lower end of the pipe 2. The pressure on the water causes; the same to travel lupwardly eXteriorly ofthe pipe 2 and the strainer so that the'mud surrounding the .strainer is forced upwardly upon the ground surface. When the well or bore is sufficiently washed thedelivering of water under pressure is xstopped and the wash pipe 18 removed. Upon the stopping of the water pressure the valve, 15 returns substantial-ly instantaneously into closed position. When closed thewalve 15 serves to prevent leakage through the pipe '2 when the well is being pumped. p

The clear water` within the Well and exteriorly of a strainer and the pump tubing will then be drawn in turn within the strainer and effect a -thorough cleansing thereof.

W'hile I have herein illust-rated my valve 15 of a conicaly form it is to be understood that if desired Such 'valve may be of spherical formation, `but it is believed that a de.- tailed description and illustration'of veuch formation is unnecessary.

.It has-wals'o been found inpractice that the upper or free end portion of-the washerv pipe maffords econvenient means to facilitate the proper positioning of the annular member or body 3 within the coupling 1.

t From' thev vforegoing description.4 it is thought to be`obvious' that a well cleaning device `constructed in accordance withA my invention is particularly well adapted for use by reason` of' the convenience and fa eility with which it maybe assembled and operated and it will also be obvious that my invention is sufsceptiblc of -some change and modification without departing from the principlet und spirit thereof and for this reason I do not wish 4to be understood limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in. practice except hereinafter clain'ied. v I claim: l

. 1. In combination with a coupling and a. well strainer engaged therewith, an annular member mounted within the coupling and provided with a Acage extending in a direction away from the strainer, a washer pipe engaged lwith said member and extending inwardly ofV the strainer, the inner end portion of the washer pipe being of bell forma- -ftion, a valve arranged within the cage and coaeting with the connected end portion of the washer pipe, a wash pipe insertible with in the strainer and extending Within tin` inner portion of the washer pipe and termivv nating below the bell thereof, said wash Apipe inwardly of its end insertilile within the washer pipe being provided with an annular enlargement, and a gasket sur roundi-ngthe wash pipe and carried therebyr below the enlargement, said gasket engag ing the inner wall ofthe bell portieri olf the washer pipe when the wash pipe is inserted within the washer pipe.

2. In con-ibination with a coupling and a well strainer engaged therewith, al washer pipe supported within the strainer, the inner end portion of the washer pipe being of bell forii'nition, a normally seated valve enacting with' the'outer'end portion of the 'washer pipe, a wash pipe insertible within the strainer and extending within the inner portion of the washer pipe and termil'tntsng;r below the bell thereof, .said wash pipe m werdly of its l end insertible withinffthe washer pipe being provided with an annu-- lar enlargement,4 and agasket surronmling the. wai-sh pipe and carried thereby below the enlargement, ,said gasket engaging the innel" wall of the bell portion of' the washer pipe when the washpipe-is inserted within the Weeber pipe. l

In testimony whereof l hereunto aliix my `signature in the [nfesenee of. two witnesses.

JARRET'I i.. m minou.

Witnesses: p

J. F. REANEY, N. Boren. 

